Yes, Disney does do professional shoots at resorts and in the parks. I think it is called Disney Fine Art Photography that does the professional shoots. I haven't ever used their services so I can't really comment on the service, but I have looked into it because we like to get photos taken while on vacation.
I'm not sure exactly what you are looking for as far as a photo session. As I mentioned, we do like to get photos take while on vacation, but we use a local professional photographer. She has come to the resorts for sessions before, but she is not allowed to do sessions in the parks. If you are interested, I can give you her information.
I know of people who had the family photo shoot in Epcot and Beach/Yacht Club Resort. I know there have been other places but I can't say for sure. I've also read about it on the Mom's panel for Disney. It's something I would like to do in the future. I got married at WDW and their work is excellent! I believe you can call them directly.
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